Under the rules of tennis, the final deciding set can be either an advantage set or a tiebreak set as predetermined by the event organizers. Both approaches are used. The tiebreak brings a close match to a conclusion, but can be criticized, as it does not require a break of service to win the match. The advantage set has the potential to extend the match beyond reasonable limits as witnessed at the 2010 Wimbledon (score 70-68). Although creating worldwide interest, this match lacked the sports principle that play should be continuous and not played in separate segments over a number of days. It also risked player injury, left the winner unable to perform in the next round, and would have damaged television coverage if it had been a final. In this paper, we study the distribution of the additional number of games in an advantage set given that it has reached 6-6. Constructive solutions to this potential problem are outlined.